Bluetooth: V5.1 + EDR, HIFI3.0, Charging time 2H, battery life 20H, standby 400H; The battery capacity of the charging compartment is 300MAH, the earphone capacity is 30MAH, and the sound frequency is 110dB at 1KHZ; The working distance is 10 meters, and it is connected immediately after opening the lid. ENC Noise Canceling & HiFi Stereo Sound -- Wireless headphones with microphone equips ENC noise reduction and software call noise reduction algorithm, which makes the call sound quality clearer. Bluetooth earbuds has titanium dome composite membrane moving coil speakers. The HiFi stereo sound of the wireless earphones provides a wider sound field and a shocking low frequency experience. Smart Touch Control & Comfortable Fits -- Wireless earbuds for iphone supports touch control of every single earbud, you can easily control answer or hang up calls, play or pause, volume up or down, switch songs ect without operating the phone. BT30 Bluetooth earbuds with 3 different sizes of ear tips for most ear canals. The attached silicone case perfectly fits with the wireless headphones, offering you the comfortable experience. Advanced Bluetooth Chip & Auto Quick Pairing -- The noise canceling wireless earbuds adopts high computing power Bluetooth chip solution, which has stable signal and clear sound quality without attenuation. BT30 wireless earphones can achieve simple and high-speed automatic connection. Adopting hall switch,after the first connection, it will connect with your device as soon as the charging case opens. LED Digital Display & Colorful Design -- Accurate LED display of the power of charging case and both earbuds, allowing you to know the power status of the wireless earbuds and charging case at any time. This series of Bluetooth earphones with translucent charging case, futuristic texture, 5 different colors. The waterproof earbuds can effectively prevent splash damage caused by sweat and raindrops.